Solid
Fills the interior of the shape instead of drawing only its border.
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Shape SystemIntermediate
sBSpline
Smooth procedural Shape path
Creates a smooth B-Spline path inside the vector Shape system for procedural graphics, mattes and motion design.
sBSpline
DaVinci Resolve · Fusion
sBSpline is the Shape-system counterpart of a smooth roto spline. Because it remains vector geometry, it can be expanded, outlined, duplicated, transformed and combined before rasterization.
Overview
What sBSpline does
sBSpline is the Shape-system counterpart of a smooth roto spline. Because it remains vector geometry, it can be expanded, outlined, duplicated, transformed and combined before rasterization.
Mental model
Think of it as a flexible vector path that stays editable all the way through the Shape graph.
Common uses
Create organic vector outlines
Build procedural blobs
Design smooth title graphics
Feed vector paths into sOutline
Combine paths with sBoolean
Animate resolution-independent shapes
Flow anatomy
Inputs & outputs
The port structure shows how this node fits into a Fusion graph.
Shape / Control Input
Shape data processed or combined by this node.
sBSpline
Fusion node
Shape Output
The generated Shape data.
Inspector
Important parameters
Start with these controls before reaching for more complicated workarounds.
Border Width
Sets the width of the mask or shape border.
Border Style
Selects the border style.
Chooses how the border is drawn along the path.
Position
Sets position for sBSpline.
Length
Sets the length.
Offset X / Y
Sets the X/Y coordinates for offset.
Z Offset [3D]
Offsets the Shape B-Spline along the Z axis in 3D space.
Size
Sets the overall size.
X Rotation / Y Rotation / Z Rotation
Rotates the Shape B-Spline around its X, Y and Z axes.
Fill Method
Selects the fill method.
Chooses how the source or shape is fitted into its target area.
Fill Method — Alternate
Selects the fill method.
Chooses how the source or shape is fitted into its target area.
Fill Method — Non-zero Winding
Selects the fill method.
Chooses how the source or shape is fitted into its target area.
Color
Sets the color.
Red / Green / Blue / Alpha
Provides separate controls for the red, green, blue and alpha channels.
Opacity
Sets the overall opacity of the material or object.
Allow Combining
Allows the B-Spline Shape and its style to combine correctly with other Shape elements.
Practical setup
A reliable workflow
- 1
Draw the spline with a minimal point count.
- 2
Close it if a filled region is required.
- 3
Continue with sOutline, sExpand or sBoolean.
- 4
Apply Shape transforms as needed.
- 5
Render only at the end with sRender.
Typical node chain
Control points→
sBSpline→
Vector Shape
Examples
Where this node fits in real work
Organic plate
Create a soft irregular vector graphic.
sBSplinesExpandsRenderMerge
Cutout graphic
Combine the B-Spline with another Shape using Boolean subtract.
sBSplinesEllipsesBooleansRender
Troubleshooting
Common mistakes
Adding raster nodes in the middle of the Shape chain
Using too many points
Rendering too early
Confusing sBSpline with the standard blue Effect Mask B-Spline
Production notes
Practical tips
Keep the graph vector until the last practical stage.
Use sTransform for motion rather than raster Transform when possible.
Pair with sOutline for stroke-based design.
Related nodes